I'm looking into setting up a very lean but reliable trading system for just trading the SPY. So far, I have found that IB with QuoteTracker for charts seems to be the best tradeoff for cheap but reliable trading. I have a quick question about the fees, for those of you who trade with IB. I really like www.traderguard.com interface for execution on IB, but I was wondering -- do you have to pay fees to get the lvl2 info for this, when QuoteTracker will already do this for me? Or should I just get a chart feed for QuoteTracker (like IQFeed) without lvl2 info and order the lvl2 info from IB? I'm a bit confused to what data feed I need to setup for each part of the system...my goal is to get a cheap but reliable trading system w/good intraday charts. I only use an MACD with 34ema in a few different timeframes, so I don't need anything special. QuoteTracker w/IQFeed looks good. I just don't know if I also have to pay for an additional feed from IB if I want my execution system working with the lvl2 info (being able to have the buy/sell button track the current bid/ask). thanks!